Finding the Fourth Proportional to 10,987.67, 16,481.34 and 2,667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.67 : 16,481.34 = 2,667.75 : x
2. Step 2: Convert to fraction form
   10,987.67/16,481.34 = 2,667.75/x
3. Step 3: Cross multiply
   10,987.67x = 16,481.34 × 2,667.75
4. Step 4: Simplify right side
   10,987.67x = 43,968,094.79
5. Step 5: Solve for x
   x = 43,968,094.79/10,987.67
6. Step 6: Final answer
   x = 4,001.58